No subject

Assuming you have access to an interpreter object, the typical idiom for
calling into Python from a C thread is 


    PyThreadState *tstate;
    PyObject *result;

    /* interp is your reference to an interpreter object. */
    tstate = PyThreadState_New(interp);
    PyEval_AcquireThread(tstate); /* this locks the GIL */

    /* Perform Python actions here.  */
    result = CallSomeFunction();
    /* evaluate result */

    /* Release the thread. No Python API allowed beyond this point. */
    PyEval_ReleaseThread(tstate); /* this unlocks the GIL */

    /* You can either delete the thread state, or save it
       until you need it the next time. */
    PyThreadState_Delete(tstate);


Simon.